ERROR opening https://cactus.nci.nih.gov/chemical/structure/c1ccnc%28c1%29C%23CCCc2cn3cc%28ccc3n2%29F/file?format=sdf&get3d=True  -- c1ccnc%28c1%29C%23CCCc2cn3cc%28ccc3n2%29F could not be loaded.